Honda Civic Service Manual page 987

Keyless/Power Door Lock System
Control Unit Input Test (cont'dl
5. Reconnect all connections to the underdash fuse/relay box, and make these input tests at the appropriate connectors on the under-dash
fuse/relay box.
' l f a n y t e s t i n d i c a t e s a p r o b l e m , f i n d a n d c o r r e c t t h e c a u s e , t h e n r e c h e c k t h e s y s t e m .
. lf all the inputtests prove OK, goto step 6.
Cavitv
Wire
Test condition
Test: Desired result Possible ca use if result is notobtained
c 1 ' l 8LU Under all conditions
Aftach to ground:
Parking, side marker, license
plate lights, and tajllights should
come on.
B l o w n N o . 2 ( 1 5 A ) f u s e i n t h e u n d e r
hood fuse/relay box
Faulty taillight relay
Faulty under-dash fuse/relay box
A n o n e n i n r h c w i r e
BLU/BEO
Under all conditions Attach to ground:
Headlights should come on.
B l o w n N o . 1 5 o r 1 7 ( 1 5 A ) f u s e i n t h e
underhood fuse/relay box
Faulty headlight relay '1 or 2
A n o o e n i n t h e w i r e
J2 WHT/RED Under all conditions Check for voltage to ground:
There should be battery voltage.
B l o w n N o . 9 ( 1 5 A ) f u s e i n t h e u n d e r -
hood fuse/relay box
A n o n c n i n t h c w i r c
BLK
Under all conditaons
Check for voltage to ground:
Thcre shouln hc 1 V or lpqs
Poor ground (G501)
An ooen in the wire
J 6 O B N
U n d e r a l l c o n d i t i o n s
A t t a c h t o g r o u n d :
T h e h o r n s s h o u l d s o u n d .
Blown No. 7 (15A)fuse in the under
hood fuse/relay box
Faulty horn relay
Faulty horns
A n 6 n e n i n r h e w i r e
J 7
U n d e r a l l c o n d i t i o n s
Check for voltage to ground:
There should be battery voltage.
Elown No. 16 (20A)fuse in the under
hood fuse/relay box
A n o o c n i n i h c w i . c
P 1 8
BED
H a t c h o p e n
Check for voltage to ground:
There should be 1 V or less.
Poor ground (G552)
Faulty hatch latch switch
A n o n c n i n r h c w i r F
H a t c h c l o s e d
Check for voltage to groundl
There shoul.l he 5 V or more
Faulty hatch latch switch
G B N Driver's door open
C h e c k f o r v o l t a g e t o g . o u n d :
T h e r e s h o u l d b e 1 V o r l e s s
. Faulty driver's door switch
. An ooen in the wire
Driver's door closed
C h e c k f o r v o l t a g e t o g r o u n d :
T h e r e s h o u l d b e 5 V o r m o r e .
Faulty driver's door switch
Short to oround
o4
LT GRN
/RED
Passenger's door open Check for voltage to ground:
There should be 1 V or less.
Faulty passenger's door switch
An ooen inthewire
Passenger's door closed
C h e c k f o r v o l t a g e t o g r o u n d l
T h e r e s h o u l d b e s V o r m o r e
. Faulty passenger's door switch
. Short to oround
X5 REDAVHT
lgnition key inserted into
t h e i g n i t i o n s w h c h
C h e c k f o r v o l t a g e t o g r o u n d :
T h e r e s h o u l d b e 1 V o r l e s s .
Poor ground {G401)
Faulty ignition key switch
An ooen inthewire
lgnition key removed from
rhe ionition switch
C h e c k f o r v o l t a g e t o g r o u n d :
T h e r e s h o u l d b e 5 V o r m o r e .
Faulty ignition key switch
Short to oround
Y1
WHT/BLK
Driver's door lock knob
switch unlocked
C h e c k f o r v o l t a g e t o g r o u n d l
T h e r e s h o u l d b e 1 V o r l e s s .
Poorground (G50'l)
Faulty driver's door lock knob switch
An open in the wire
Driver's door lock knob C h e c k f o r v o l t a g e t o g r o u n d l
I h e r e s h o u l d b e 5 V o r m o r e .
Faulty driver's door lock knob switch
Short to oround
Y8
YEURED
Driver's door lock knob
switch locked
C h e c k f o r v o l t a g e t o g r o u n d l
T h e r e s h o u l d b e 1 V o r l e s s .
Poorground (G50'l)
Faulty driver's door lock knob switch
A n o n c n i n i h e w i r e
Driver's door lock knob
switch unlocked
C h e c k f o r v o l t a g e t o g r o u n d :
T h e r e s h o u l d b e 5 V o r m o r e
' Faulty driver's door lock knob sw;tch
. Shorr to oround
Y 1 0 WHT/GRN
Drtver's door lock switch
u n l o c k e d
C h e c k f o r v o l t a g e t o g r o u n d l
T h e r e s h o u l d b e 1 V o r l e s s .
Poorground (G501i
Faulty driver's door lock switch
An ooen in the wire
Driver's door lock switch in C h e c k f o r v o l t a g e t o g r o u n d :
T h e r c s h o r l . l b e 5 V o r m 6 r p
Faulty driver's door lock switch
Short to o rolrnd
Y12
WHT/BLU
Driver's door lock switch
locked
C h e c k f o r v o l t a g e t o g r o u n d :
T h e r e s h o u l d b e
' l
V o r l e s s .
Poor ground (G501)
Faulty driver's door lock switch
An oDen in the wire
Driver's door lock switch in C h e c k t o r v o l t a g e t o g r o u n d :
T h e r e s h o u l d b e 5 V o r m o r e
F a u l t y d r i v e r ' s d o o r l o c k s w i t c h
22-156
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